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use crate::direction::Direction;
use crate::event::{Event, EventResult, Key};
use crate::view::{View, ViewWrapper};
pub struct CircularFocus<T: View> {
view: T,
wrap_tab: bool,
wrap_arrows: bool,
}
impl<T: View> CircularFocus<T> {
pub fn new(view: T, wrap_tab: bool, wrap_arrows: bool) -> Self {
CircularFocus {
view,
wrap_tab,
wrap_arrows,
}
}
pub fn wrap_tab(view: T) -> Self {
CircularFocus::new(view, true, false)
}
pub fn wrap_arrows(view: T) -> Self {
CircularFocus::new(view, false, true)
}
pub fn wraps_tab(&self) -> bool {
self.wrap_tab
}
pub fn wraps_arrows(&self) -> bool {
self.wrap_arrows
}
inner_getters!(self.view: T);
}
impl<T: View> ViewWrapper for CircularFocus<T> {
wrap_impl!(self.view: T);
fn wrap_on_event(&mut self, event: Event) -> EventResult {
match (self.view.on_event(event.clone()), event) {
(EventResult::Ignored, Event::Key(Key::Tab)) if self.wrap_tab => {
if self.view.take_focus(Direction::front()) {
EventResult::Consumed(None)
} else {
EventResult::Ignored
}
}
(EventResult::Ignored, Event::Shift(Key::Tab))
if self.wrap_tab =>
{
if self.view.take_focus(Direction::back()) {
EventResult::Consumed(None)
} else {
EventResult::Ignored
}
}
(EventResult::Ignored, Event::Key(Key::Right))
if self.wrap_arrows =>
{
if self.view.take_focus(Direction::left()) {
EventResult::Consumed(None)
} else {
EventResult::Ignored
}
}
(EventResult::Ignored, Event::Key(Key::Left))
if self.wrap_arrows =>
{
if self.view.take_focus(Direction::right()) {
EventResult::Consumed(None)
} else {
EventResult::Ignored
}
}
(EventResult::Ignored, Event::Key(Key::Up))
if self.wrap_arrows =>
{
if self.view.take_focus(Direction::down()) {
EventResult::Consumed(None)
} else {
EventResult::Ignored
}
}
(EventResult::Ignored, Event::Key(Key::Down))
if self.wrap_arrows =>
{
if self.view.take_focus(Direction::up()) {
EventResult::Consumed(None)
} else {
EventResult::Ignored
}
}
(other, _) => other,
}
}
}